This is a replacement case for the original Draytek Vigor 167 Modem. 

Since it contains only a singe PCB it is q quick and easy swap. Hande the PCB with care, as it seems to have a highvoltage area with its own protective cover (which should also be used in the new case).

If wanted, the LEDs can still be visible in the front by printing the light guides in clear PETG and glueing them in. The guides should be printed sideways to allow the light to travel in the layers.

It is advised to avoid PLA filament, since it has low thermal stabiliy and I am not sure how hot the electonics can get. Instead use PETG, ABS or similar.